Reference:
51-SDMT908-MP03
In-Ceiling mounting kit for GV-PPTZ14021/PPTZ14031 IP speed domes. Dimension, Mounting plate: 227 x 286 mm. Supplied with: Screw x 4; Hex key x 1; M6 screw x 4; Installation sticker x 1; M4 screw x 2; In-ceiling cover x 1.